java.net.SocketException: Too many open files

Solution Verified - Updated -

Issue

  • We are receiving the 'Too many open files' exception in our server logs:

    Socket accept failed java.net.SocketException: Too many open files
            at java.net.PlainSocketImpl.socketAccept(Native Method)
            at java.net.PlainSocketImpl.accept(Unknown Source)
            at java.net.ServerSocket.implAccept(Unknown Source)
            ...
            ...
    java.io.FileNotFoundException: filename (Too many open files)
            at java.io.FileInputStream.open(Native Method)
            at java.io.FileInputStream.<init>(FileInputStream.java:106)
            at java.io.FileInputStream.<init>(FileInputStream.java:66)
            at java.io.FileReader.<init>(FileReader.java:41)
    
  • java.net.SocketException: Too many open files -- Need RCA

    <Critical> <Server> <BEA-002616> <Failed to listen on channel "Default[2]" on 127.0.0.1:7001, failure count: 1, failing for 0 seconds, java.net.SocketException: Too many open files>
    
  • Facing the below error on server :

    19:57:22,988 ERROR [DiskStore] ticketCache: Could not create disk store. Initial cause was /tmp/path/ticketCache.data (Too many open files)
    java.io.FileNotFoundException: /tmp/path/ticketCache.data (Too many open files)
        at java.io.RandomAccessFile.open(Native Method)
        at java.io.RandomAccessFile.<init>(RandomAccessFile.java:233)
        at net.sf.ehcache.store.DiskStore.initialiseFiles(DiskStore.java:208)
        at net.sf.ehcache.store.DiskStore.<init>(DiskStore.java:153)
        at net.sf.ehcache.Cache.createDiskStore(Cache.java:526)
        at net.sf.ehcache.Cache.initialise(Cache.java:503)
        at net.sf.ehcache.CacheManager.addCacheNoCheck(CacheManager.java:634)
        at net.sf.ehcache.CacheManager.addCache(CacheManager.java:624)
        at org.springframework.cache.ehcache.EhCacheFactoryBean.afterPropertiesSet(EhCacheFactoryBean.java:259)
    
  • WAR/EAR deployment fails:

    "/deployment=deployment.ear:add(runtime-name="deployment.ear", content=[{"path"=>"/path/to/deployment/deployment.ear","archive"=>false}], enabled=true)"
    {
        "outcome" => "failed",
        "failure-description" => {"WFLYCTL0080: Failed services" => {"jboss.deployment.unit.\"deployment.ear\".STRUCTURE" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"deployment.ear\".STRUCTURE: WFLYSRV0153: Failed to process phase STRUCTURE of deployment \"deployment.ear\"
        Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: WFLYEE0054: Failed to process children for EAR [\"/path/to/deployment/deployment.ear\"]
        Caused by: java.io.FileNotFoundException: /jboss-eap-7/standalone/tmp/vfs/deployment/deployment917425a0df51e2b7/library.jar-c42571ac700c1222/library.jar (Too many open files)"}},
        "rolled-back" => true 
    

Environment

  • Red Hat JBoss Enterprise Application Platform (JBoss EAP)
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